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mail domain name changing when sent

Posted on 2011-10-19
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Last Modified: 2012-05-12
Hi all,

    We are having a unique issue with exchange 2007 changing domain names randomly when sending to a group.  Example  I send an email to a group with 20 email addresses that includes testuser@google.com.  I get an error back from the exchange server stating that testuser@mydomainname.com doesn't exist and the mail was not delivered, although the 19 others were delivered without problems.  Obviously the name is not in my domain as the address was testuser@google.com not testuser@mydomainname.com.  I am not sure why the exchange server is changing one of the email addresses randomly, but it doesn't seem to be stuck to a particular email address either.  It has happened on multiple different addresses but it seems to be always be just one address that is changed out of all of them in the group.

Anyone have any ideas where I can look?

Thanks.
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Question by:sstairs
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8 Comments
 
LVL 4

Assisted Solution

by:danielmarko
danielmarko earned 1000 total points
ID: 36994988
You can have anything as an EMAIL alias joe@disney.com if you want.
It might be worth the time to check what addresses are actually on your server.

maybe copy and paste these commands into exchange management shell and confirm that you do not already have the address in your domain. Press enter a few times after you run it.

Get-Mailbox -ResultSize “Unlimited” | select name, EmailAddresses | foreach {
“Name: “+$_.name
$_.EmailAddresses | foreach {
if($_.SmtpAddress){
if($_.IsPrimaryAddress){
“Primary SmtpAddress: $($_.SmtpAddress)”
} else {
“SmtpAddress: $($_.SmtpAddress)”
}
}
}
write-output “”
} > c:\Addresses.txt
i got this from  N3ilb’s Weblog, a fun place

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LVL 28

Assisted Solution

by:sunnyc7
sunnyc7 earned 1000 total points
ID: 36995081
Before you do anything, first find out if you have testuser@mydomainname.com  in your Active Directory.

Places to look
> Mail enabled contacts
> person with similar mailbox / alias.

Another neat trick which you can do, is search the whole AD

Download adfind
http://www.joeware.net/freetools/tools/adfind/index.htm

extract it to desktop

start > run > cmd
cd to the directory

adfind -sc email:email@domain.com > c:\list.txt
http://www.joeware.net/freetools/tools/adfind/usage.htm

Check and Edit / modify the user details using AdsiEdit
start > run > adsiedit.msc
Navigate to the container listed above.
0
 

Author Comment

by:sstairs
ID: 36995673
Thanks for the reply.   Neither testuser@google.com or testuser@mydomain.com shows up as an alternate address for anyone on my server using the command line query or adfind.
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LVL 28

Expert Comment

by:sunnyc7
ID: 36996529
If it's not in AD, check if there are any Transport Rules / Address re-writing Transport rules.
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Author Comment

by:sstairs
ID: 36999607
There are no transport rules used on the server.
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LVL 28

Expert Comment

by:sunnyc7
ID: 37002202
Open EMC
Recipient Config
Contacts

Check if you have a mail contact for
testuser@google.com
right click properties
Check email addresses.
See if you applied EAP to the user and does it have testuser@yourodomain.com in the list of email addresses.
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Accepted Solution

by:
sstairs earned 0 total points
ID: 37262835
Issue resolved when we upgraded to Exchange 2010
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Author Closing Comment

by:sstairs
ID: 37628416
Issue resolved during upgrade.  Experts comments were to the point and valid troubleshooting steps.
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